Updated build badge

Author: niemyjski

README.md

@@ -1,6 +1,8 @@
 # Exceptionless .NET Clients
 
-[![Build status](https://github.com/Exceptionless/Exceptionless.Net/workflows/Build/badge.svg)](https://github.com/Exceptionless/Exceptionless.Net/actions)
+[![Build Windows](https://github.com/exceptionless/Exceptionless.Net/workflows/Build%20Windows/badge.svg?branch=master)](https://github.com/Exceptionless/Exceptionless.Net/actions)
+[![Build OSX](https://github.com/exceptionless/Exceptionless.Net/workflows/Build%20OSX/badge.svg)](https://github.com/Exceptionless/Exceptionless.Net/actions)
+[![Build Linux](https://github.com/exceptionless/Exceptionless.Net/workflows/Build%20Linux/badge.svg)](https://github.com/Exceptionless/Exceptionless.Net/actions)
 [![NuGet Version](http://img.shields.io/nuget/v/Exceptionless.svg?style=flat)](https://www.nuget.org/packages/Exceptionless/)
 [![Discord](https://img.shields.io/discord/715744504891703319)](https://discord.gg/6HxgFCx)
 [![Donate](https://img.shields.io/badge/donorbox-donate-blue.svg)](https://donorbox.org/exceptionless?recurring=true)